The Presentation layer is a translator, and is responsible for presenting data to the application layer, i.e., ensuring that data sent from one system is readable by the app layer of the receiving station by converting the data into standard format before transmission. It is responsible for code formatting, conversion, and data transfer syntax to layer 7 and is the only layer that can change data. Presentation layer tasks are data compression and decompression; encryption and decryption. E.g., PICT, TIFF, JPEG; MIDI, MPEG, QuickTime.

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